Production and Operation Management - 1137 Words

Plastic key chains are being produced in a company named Hot Shot Plastics. The plastic material is first molded and then trimmed to the required shape. The current curetimes (which is the time for plastic to cool) during the molding process affect the edge quality of the key-chains produced. The aim is to achieve statistical control of the curetimes using Xbar and R-charts Curetime data of 25 samples, each of size 4 have been taken when the process is assumed to be in control. These are shown below. Sample no | Observations | 1 | 27.34667 | 27.50085 | 29.94412 | 28.21249 | 2 | 27.79695 | 26.15006 | 31.21295 | 31.33272 | 3 | 33.53255 | 29.32971 | 29.70460 | 31.05300 | 4 | 37.98409 | 32.26942 | 31.91741 | 29.44279 | 5 | 33.82722 |†¦show more content†¦The data from these new samples are shown below. Update your control charts and compare the results with the previous data. The charts are drawn with the new data using the same control limits established before. Comment on what the new chart shows. Sample no | Observations | 1 | 31.65830 | 29.78330 | 31.87910 | 33.91250 | 2 | 34.46430 | 25.18480 | 37.76689 | 39.21143 | 3 | 41.34268 | 39.54590 | 29.55710 | 32.57350 | 4 | 29.47310 | 25.37840 | 25.04380 | 24.00350 | 5 | 25.46710 | 34.85160 | 30.19150 | 31.62220 | 6 | 46.25184 | 34.71356 | 41.41277 | 44.63319 | 7 | 35.44750 | 38.83289 | 33.08860 | 31.63490 | 8 | 34.55143 | 33.86330 | 35.18869 | 42.31515 | 9 | 43.43549 | 37.36371 | 38.85718 | 39.25132 | 10 | 37.05298 | 42.47056 | 35.90282 | 38.21905 | 11 | 38.57292 | 39.06772 | 32.22090 | 33.20200 | 12 | 27.03050 | 33.63970 | 26.63060 | 42.79176 | PARTâ…   Company introduction: Hot Shot Plastics Hot Shot Plastics, Inc. filed as an Articles of Incorporation in the State of California and is no longer active. This corporate entity was filed approximately fourteen years ago on Monday, June 05, 2000, according to public records filed with California Secretary of State. Products: Manufactures processed plastics Plastic cutting machinery, Plastic grinding machinery, Rubber or plastic mills, Rubber or plastic extrusion dies, Plastic injection molds, Thermoforming molds, Ejector pins, In mold decoration IMD cylinder,Show MoreRelatedProduction And Operations Management : Production Management Essay941 Words   |  4 Pagesused in the production/operations subsystem of the organization into value added product/services in a controlled manner as per the policies of the organization, is the definition of Production/operations management. Consequently, it is that part of an organization, this part is involved in the transformation of a range of inputs, like men, material, machines, information and capital, into the required (products/services), with the requisite quality level. 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